identityProviderLoginWithId
Handles login via third-parties including Social login, external OAuth and OpenID Connect, and other login systems.
This record as markdown: /tools/io-fusionauth-mcp-api/identityproviderloginwithid.md
What identityProviderLoginWithId does on Fusionauth
AI agents invoke identityProviderLoginWithId to trigger actions in Fusionauth. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why identityProviderLoginWithId is rated High
This tool triggers an external authentication/login operation via third-party identity providers. It executes an authentication flow that has side effects: it creates or updates session state, may provision users, and interacts with external OAuth/OIDC systems.
From the tool's definition Handles login via third-parties including Social login, external OAuth and OpenID Connect, and other login systems
Attacks that exploit this kind of access
The rule that runs identityProviderLoginWithId safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Fusionauth, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For identityProviderLoginWithId, this is the rule to start with:
identityProviderLoginWithId stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Fusionauth, apply this rule, and every identityProviderLoginWithId call is checked against it from then on.
Questions about identityProviderLoginWithId
Handles login via third-parties including Social login, external OAuth and OpenID Connect, and other login systems. It is categorised as a Execute tool in the Fusionauth MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Fusionauth MCP server in PolicyLayer and add a rule for identityProviderLoginWithId: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Fusionauth. Nothing to install.
identityProviderLoginWithId is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the identityProviderLoginWithId rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for identityProviderLoginWithId. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
identityProviderLoginWithId is provided by the Fusionauth MCP server (@fusionauth/mcp-api). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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